Man this is a small cute subwoofer. Everyone is happy with it's size and looks. Last time I tested the Visonik sub10(www.visonik.nl) I almost got an hernia. Not with this sub. I set up this sub. Between TV and righthanded frontspeaker. It's connected via LFE and the volume on the sub is up to 2/3-3/4 of the way.The other speakers, even my fronts(kef q50) are set to small. I am not sure if I have setup the sub correctly...but I am not terribly impressed with it. Certainly not compared to the Visonik. I tried it out on SPR and U571...and the think I find is that it lacks the serious punch. The bass is just not as loud or earthshuddering. Esspecially with SPR in the last battle it wasn't able to increase in bass weight when the Tigers slowly closed in.(at first you hear the low rumble..but when they are close..with the other sub it's like you're in the middle of it) Also i found out with the other sub...I end up with a headache when I use it full out. Not with this sub(is it a plus?) Of course getting a headache when watching movies it's not smart, but when i tone it down..i know it has the reserves to go much lower. With this sub...when I turn the volume 100% it's not that great a difference. I guess it's unfair to compare this sub to the Visonik who's bigger(10") and has a bigger amp too. What does this mean? The Pro is setup wrong or is it not what I am looking for? Hopefully someone canb help me out..